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philosopher who formulated an atomic theory for the universe. 400 B.C.
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he was responseable for the development of modern atomic theory..made the solid sphere modle
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honored with the Nobel Prize for Physics in 1923 for his measurement of the elementary electronic charge and for his work on the photoelectric effect.
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In early work he discovered the concept of radioactive half-life, proved that radioactivity involved the transmutation of one chemical element to another
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Erwin Schrödinger formulated in 1926 a wave-equation that accurately gave the energy levels of atoms.
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developed the Bohr model of the atom with the atomic nucleus at the centre and electrons in orbit around it, which he compared to the planets orbiting the Sun
bohr made the planetart modle -
he postulated the wave nature of electrons and suggested that all matter has wave properties. This concept is known as wave-particle duality or the de Broglie hypothesis.
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credited with the discovery and identification of the electron. Thomson is also credited with finding the first evidence for isotopes
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discovered the particle now known as the meson
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best known for his mass–energy equivalence formula E = mc2 made the nuke modle
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Pauli introduced two new quantum numbers and formulated the so called Pauli principle
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Discovery of the neutron
Manhattan Project -
atomic theory is a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms
